Heat 1 tbl. Oil in a medium skillet over med. heat. Add potato and cook 5 minutes or until soft. Stir in onions and cook 5 minutes or so. Remove from heat. Transfer to a bowl. In a separate bowl, beat eggs with salt and pepper. Add potato mixture and mix well. Add remaining oil to skillet and heat over medium heat. Pour in egg mixture. Cook until omelet begins to set – 7 to 8 minutes. Carefully flip to cook other side. Add the avocado and cheese at this time. Cook 2 to 3 minutes or until done and browned on bottom. Serve hot with salsa. Serves 4